12851942879 has 4 divisors (see below), whose sum is σ = 12861130800. Its totient is φ = 12842754960.

The previous prime is 12851942839. The next prime is 12851942891. The reversal of 12851942879 is 97824915821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12851942879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12851942839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4591862 + ... + 4594659.

It is an arithmetic number, because the mean of its divisors is an integer number (3215282700).

Almost surely, 2^12851942879 is an apocalyptic number.

12851942879 is a deficient number, since it is larger than the sum of its proper divisors (9187921).

12851942879 is an equidigital number, since it uses as much as digits as its factorization.

12851942879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9187920.

The product of its digits is 2903040, while the sum is 56.

The spelling of 12851942879 in words is "twelve billion, eight hundred fifty-one million, nine hundred forty-two thousand, eight hundred seventy-nine".